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| author | Alain Volmat <alain.volmat@foss.st.com> | 2026-01-06 12:34:40 +0100 |
|---|---|---|
| committer | Alexandre Torgue <alexandre.torgue@foss.st.com> | 2026-03-06 10:40:23 +0100 |
| commit | bb3fa3f8a4166e6fbc769e208a1932242800f8e5 (patch) | |
| tree | 52c14b8a7efe6bfe204bc2516755e4b84fc4df82 | |
| parent | eea9018b64c94a87304a4a2632841140e8c05083 (diff) | |
ARM: dts: stm32: enable DCMI DMA-MDMA chaining on stm32mp157c-ev1.dts
Enable the DMA-MDMA chaining for the dcmi (camera capture)
in order to be able to achieve higher resolution.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/20260106-stm32-dcmi-dma-chaining-v2-12-70688bccd80a@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
| -rw-r--r-- | arch/arm/boot/dts/st/stm32mp157c-ev1.dts | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/st/stm32mp157c-ev1.dts b/arch/arm/boot/dts/st/stm32mp157c-ev1.dts index 4e46d58bf61f..99c7efd73aee 100644 --- a/arch/arm/boot/dts/st/stm32mp157c-ev1.dts +++ b/arch/arm/boot/dts/st/stm32mp157c-ev1.dts @@ -86,6 +86,14 @@ pinctrl-names = "default", "sleep"; pinctrl-0 = <&dcmi_pins_a>; pinctrl-1 = <&dcmi_sleep_pins_a>; + /* + * Enable DMA-MDMA chaining by adding a SRAM pool and + * a MDMA channel + */ + sram = <&dcmi_pool>; + + dmas = <&dmamux1 75 0x400 0x01>, <&mdma1 0 0x3 0x1200000a 0 0>; + dma-names = "tx", "mdma_tx"; port { dcmi_0: endpoint { @@ -302,6 +310,13 @@ status = "disabled"; }; +&sram4 { + dcmi_pool: dcmi-sram@0 { + reg = <0x0 0x8000>; + pool; + }; +}; + &timers2 { /* spare dmas for other usage (un-delete to enable pwm capture) */ /delete-property/dmas; |